51746315105 has 4 divisors (see below), whose sum is σ = 62095578132. Its totient is φ = 41397052080.

The previous prime is 51746315083. The next prime is 51746315219. The reversal of 51746315105 is 50151364715.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9231174241 + 42515140864 = 96079^2 + 206192^2 .

It is a de Polignac number, because none of the positive numbers 2^k-51746315105 is a prime.

It is a super-2 number, since 2×51746315105² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5174631506 + ... + 5174631515.

It is an arithmetic number, because the mean of its divisors is an integer number (15523894533).

Almost surely, 2^51746315105 is an apocalyptic number.

It is an amenable number.

51746315105 is a deficient number, since it is larger than the sum of its proper divisors (10349263027).

51746315105 is a wasteful number, since it uses less digits than its factorization.

51746315105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10349263026.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 51746315105 in words is "fifty-one billion, seven hundred forty-six million, three hundred fifteen thousand, one hundred five".